| 1 | |
| 2 | from wxPython.wx import * |
| 3 | |
| 4 | import images |
| 5 | |
| 6 | #--------------------------------------------------------------------------- |
| 7 | |
| 8 | class MyCanvas(wxScrolledWindow): |
| 9 | def __init__(self, parent, id = -1, size = wxDefaultSize): |
| 10 | wxScrolledWindow.__init__(self, parent, id, wxPoint(0, 0), size, wxSUNKEN_BORDER) |
| 11 | |
| 12 | self.lines = [] |
| 13 | self.maxWidth = 1000 |
| 14 | self.maxHeight = 1000 |
| 15 | |
| 16 | self.SetBackgroundColour(wxNamedColor("WHITE")) |
| 17 | EVT_LEFT_DOWN(self, self.OnLeftButtonEvent) |
| 18 | EVT_LEFT_UP(self, self.OnLeftButtonEvent) |
| 19 | EVT_MOTION(self, self.OnLeftButtonEvent) |
| 20 | |
| 21 | EVT_PAINT(self, self.OnPaint) |
| 22 | |
| 23 | |
| 24 | self.SetCursor(wxStockCursor(wxCURSOR_PENCIL)) |
| 25 | bmp = images.getTest2Bitmap() |
| 26 | mask = wxMaskColour(bmp, wxBLUE) |
| 27 | bmp.SetMask(mask) |
| 28 | self.bmp = bmp |
| 29 | |
| 30 | self.SetScrollbars(20, 20, self.maxWidth/20, self.maxHeight/20) |
| 31 | |
| 32 | def getWidth(self): |
| 33 | return self.maxWidth |
| 34 | |
| 35 | def getHeight(self): |
| 36 | return self.maxHeight |
| 37 | |
| 38 | |
| 39 | def OnPaint(self, event): |
| 40 | dc = wxPaintDC(self) |
| 41 | self.PrepareDC(dc) |
| 42 | self.DoDrawing(dc) |
| 43 | |
| 44 | |
| 45 | def DoDrawing(self, dc): |
| 46 | dc.BeginDrawing() |
| 47 | dc.SetPen(wxPen(wxNamedColour('RED'))) |
| 48 | dc.DrawRectangle(5, 5, 50, 50) |
| 49 | |
| 50 | dc.SetBrush(wxLIGHT_GREY_BRUSH) |
| 51 | dc.SetPen(wxPen(wxNamedColour('BLUE'), 4)) |
| 52 | dc.DrawRectangle(15, 15, 50, 50) |
| 53 | |
| 54 | dc.SetFont(wxFont(14, wxSWISS, wxNORMAL, wxNORMAL)) |
| 55 | dc.SetTextForeground(wxColour(0xFF, 0x20, 0xFF)) |
| 56 | te = dc.GetTextExtent("Hello World") |
| 57 | dc.DrawText("Hello World", 60, 65) |
| 58 | |
| 59 | dc.SetPen(wxPen(wxNamedColour('VIOLET'), 4)) |
| 60 | dc.DrawLine(5, 65+te[1], 60+te[0], 65+te[1]) |
| 61 | |
| 62 | lst = [(100,110), (150,110), (150,160), (100,160)] |
| 63 | dc.DrawLines(lst, -60) |
| 64 | dc.SetPen(wxGREY_PEN) |
| 65 | dc.DrawPolygon(lst, 75) |
| 66 | dc.SetPen(wxGREEN_PEN) |
| 67 | dc.DrawSpline(lst+[(100,100)]) |
| 68 | |
| 69 | dc.DrawBitmap(self.bmp, 200, 20, true) |
| 70 | dc.SetTextForeground(wxColour(0, 0xFF, 0x80)) |
| 71 | dc.DrawText("a bitmap", 200, 85) |
| 72 | |
| 73 | font = wxFont(20, wxSWISS, wxNORMAL, wxNORMAL) |
| 74 | dc.SetFont(font) |
| 75 | dc.SetTextForeground(wxBLACK) |
| 76 | for a in range(0, 360, 45): |
| 77 | dc.DrawRotatedText("Rotated text...", 300, 300, a) |
| 78 | |
| 79 | dc.SetPen(wxTRANSPARENT_PEN) |
| 80 | dc.SetBrush(wxBLUE_BRUSH) |
| 81 | dc.DrawRectangle(50,500,50,50) |
| 82 | dc.DrawRectangle(100,500,50,50) |
| 83 | |
| 84 | dc.SetPen(wxPen(wxNamedColour('RED'))) |
| 85 | dc.DrawEllipticArc(200, 500, 50, 75, 0, 90) |
| 86 | |
| 87 | self.DrawSavedLines(dc) |
| 88 | dc.EndDrawing() |
| 89 | |
| 90 | |
| 91 | |
| 92 | def DrawSavedLines(self, dc): |
| 93 | dc.SetPen(wxPen(wxNamedColour('MEDIUM FOREST GREEN'), 4)) |
| 94 | for line in self.lines: |
| 95 | for coords in line: |
| 96 | apply(dc.DrawLine, coords) |
| 97 | |
| 98 | |
| 99 | def SetXY(self, event): |
| 100 | self.x, self.y = self.ConvertEventCoords(event) |
| 101 | |
| 102 | def ConvertEventCoords(self, event): |
| 103 | xView, yView = self.GetViewStart() |
| 104 | xDelta, yDelta = self.GetScrollPixelsPerUnit() |
| 105 | return (event.GetX() + (xView * xDelta), |
| 106 | event.GetY() + (yView * yDelta)) |
| 107 | |
| 108 | def OnLeftButtonEvent(self, event): |
| 109 | if event.LeftDown(): |
| 110 | self.SetXY(event) |
| 111 | self.curLine = [] |
| 112 | self.CaptureMouse() |
| 113 | |
| 114 | elif event.Dragging(): |
| 115 | dc = wxClientDC(self) |
| 116 | self.PrepareDC(dc) |
| 117 | dc.BeginDrawing() |
| 118 | dc.SetPen(wxPen(wxNamedColour('MEDIUM FOREST GREEN'), 4)) |
| 119 | coords = (self.x, self.y) + self.ConvertEventCoords(event) |
| 120 | self.curLine.append(coords) |
| 121 | apply(dc.DrawLine, coords) |
| 122 | self.SetXY(event) |
| 123 | dc.EndDrawing() |
| 124 | |
| 125 | elif event.LeftUp(): |
| 126 | self.lines.append(self.curLine) |
| 127 | self.curLine = [] |
| 128 | self.ReleaseMouse() |
| 129 | |
| 130 | |
| 131 | ## This is an example of what to do for the EVT_MOUSEWHEEL event, |
| 132 | ## but since wxScrolledWindow does this already it's not |
| 133 | ## necessary to do it ourselves. |
| 134 | |
| 135 | ## wheelScroll = 0 |
| 136 | ## def OnWheel(self, evt): |
| 137 | ## delta = evt.GetWheelDelta() |
| 138 | ## rot = evt.GetWheelRotation() |
| 139 | ## linesPer = evt.GetLinesPerAction() |
| 140 | ## ws = self.wheelScroll |
| 141 | ## ws = ws + rot |
| 142 | ## lines = ws / delta |
| 143 | ## ws = ws - lines * delta |
| 144 | ## self.wheelScroll = ws |
| 145 | ## if lines != 0: |
| 146 | ## lines = lines * linesPer |
| 147 | ## vsx, vsy = self.GetViewStart() |
| 148 | ## scrollTo = vsy - lines |
| 149 | ## self.Scroll(-1, scrollTo) |
| 150 | |
| 151 | #--------------------------------------------------------------------------- |
| 152 | |
| 153 | def runTest(frame, nb, log): |
| 154 | win = MyCanvas(nb) |
| 155 | return win |
| 156 | |
| 157 | #--------------------------------------------------------------------------- |
| 158 | |
| 159 | |
| 160 | |
| 161 | |
| 162 | |
| 163 | |
| 164 | |
| 165 | |
| 166 | |
| 167 | |
| 168 | |
| 169 | |
| 170 | |
| 171 | overview = """\ |
| 172 | """ |